Ange gaudefroy



(No Model.)

A. GAUDEFROY. ENVELOPE.

N0.550,499. Patented Nov; 6,1895.

LayJeJ." jweivhr ANDREW BEGRANAM.PHO'IOUMQWASHINGTDN 0.:-

UNITED STATES PATENT OFFICE.

ANGE GAUDEFROY, on NEW YORK, N. Y.

ENVELOPE.

SPECIFICATION forming part of Letters Patent No. 550,499, dated November26, 1895.

Application filed April 12, 1895. Serial No. 545,539. (No model.)

To aZZ whom it may concern.-

Be it known that I, ANGE GAUDEFROY, a citizen of France, residing in thecity of New York, State of New York, have invented a new and usefulImprovement in Envelopes, of which the following is a specification.

My invention relates to an improvement in envelopes, of folded flexiblefabric, so made that they cannot be op ened without detection.

The following specification and drawings accompanying will fullydescribe the invention, in which- Figure 1 shows the shape of the paperas cut to form an envelope. Fig. 2 shows the complete envelope with endopen ready for use, the opposite end being secured by a single look.Fig. 3 shows an envelope made with two looks at one end and closed byspearhead tongue at the other. Fig. 4 shows the same as Fig. 2 withthreads attached to locking-points, by which they can be spread afterinserting. Fig. 5 shows the same as Fig. 4 with threads broken off inthe envelope after spreading the points.

Like letters refer to like parts.

This invention is an envelope formed by the side flaps folding over eachother and secured by one or more tongues at bottom of envelopes, asshown in Figs. 2 and 3, the tongue passing through slits in both sideflaps, and being spread, as shown, makes a secure envelope ready foruse, the open end being afterward closed by spear -shaped tongue passingthrough slits in both side flaps, the side flaps a a to overlap eachother and end flaps b b overlapping the side flaps, with perforations orslots 0 in the side flaps and tongues 01 and d on end flaps to enter andlock in the slots 0. The looking-tongues d and cl are made with aportion broader than the width of slots and preferably so that they canbe folded, as shown in Figs. 2, 3, and 4, and so that the points e e, ofspear-head shaped tongue, will hook under the edges of slits, as shownat e e in Fig. 3, or the points of spearhead can be spread by threadsattached thereto and passed through slit and edges of envelope, as shownat f f in Fig. 4, and after closing and spreading the points the threadscan be broken off, as shown in Fig. 5.

Having described my invention, I desire to c1aim An envelope the closingflap and body of which are respectively provided with a slot and tonguethe tongue being capable of being folded, and when unfolded being widerthan the slot and threads attached to the tongue'for the purpose ofunfolding the same, substantially as described.

A. GAU'DEFROY. Witnesses 2 A. DULAGUIER, DENERNEY.

